Anyone looking over my shoulder while I’m performing a PC Tune-up knows one of my go to tools is CCleaner. CCleaner is not only a great way to clean up temporary, cache, log, and Internet files, it also allows you to clean up your Window’s registry. CCleaner is one of the few tools that will clean all temporary internet files – for nearly every browser on the planet (including ones you may never have heard of). CCleaner also does a great job of removing temp files and recent file lists from most apps used on the PC. For a Windows PC, you cannot beat CCleaner for both quickly freeing up disk space and cleaning up the registry. Cost: Free.